28 static int erofs_workgroup_get(struct erofs_workgroup *grp)  in erofs_workgroup_get()  argument
33 	o = erofs_wait_on_workgroup_freezed(grp);  in erofs_workgroup_get()
37 	if (atomic_cmpxchg(&grp->refcount, o, o + 1) != o)  in erofs_workgroup_get()
50 	struct erofs_workgroup *grp;  in erofs_find_workgroup()  local
54 	grp = xa_load(&sbi->managed_pslots, index);  in erofs_find_workgroup()
55 	if (grp) {  in erofs_find_workgroup()
56 		if (erofs_workgroup_get(grp)) {  in erofs_find_workgroup()
62 		DBG_BUGON(index != grp->index);  in erofs_find_workgroup()
65 	return grp;  in erofs_find_workgroup()
69 					       struct erofs_workgroup *grp)  in erofs_insert_workgroup()  argument
79 	atomic_inc(&grp->refcount);  in erofs_insert_workgroup()
83 	pre = __xa_cmpxchg(&sbi->managed_pslots, grp->index,  in erofs_insert_workgroup()
84 			   NULL, grp, GFP_NOFS);  in erofs_insert_workgroup()
94 		atomic_dec(&grp->refcount);  in erofs_insert_workgroup()
95 		grp = pre;  in erofs_insert_workgroup()
98 	return grp;  in erofs_insert_workgroup()
101 static void  __erofs_workgroup_free(struct erofs_workgroup *grp)  in __erofs_workgroup_free()  argument
104 	erofs_workgroup_free_rcu(grp);  in __erofs_workgroup_free()
107 int erofs_workgroup_put(struct erofs_workgroup *grp)  in erofs_workgroup_put()  argument
109 	int count = atomic_dec_return(&grp->refcount);  in erofs_workgroup_put()
114 		__erofs_workgroup_free(grp);  in erofs_workgroup_put()
119 					   struct erofs_workgroup *grp)  in erofs_try_to_release_workgroup()  argument
126 	if (!erofs_workgroup_try_to_freeze(grp, 1))  in erofs_try_to_release_workgroup()
135 	if (erofs_try_to_free_all_cached_pages(sbi, grp)) {  in erofs_try_to_release_workgroup()
136 		erofs_workgroup_unfreeze(grp, 1);  in erofs_try_to_release_workgroup()
145 	DBG_BUGON(__xa_erase(&sbi->managed_pslots, grp->index) != grp);  in erofs_try_to_release_workgroup()
148 	erofs_workgroup_unfreeze(grp, 0);  in erofs_try_to_release_workgroup()
149 	__erofs_workgroup_free(grp);  in erofs_try_to_release_workgroup()
156 	struct erofs_workgroup *grp;  in erofs_shrink_workstation()  local
161 	xa_for_each(&sbi->managed_pslots, index, grp) {  in erofs_shrink_workstation()
163 		if (!erofs_try_to_release_workgroup(sbi, grp))  in erofs_shrink_workstation()